Respuesta :

The river bank can expand due to the water breaking apart and movie for sediment.

Flood water from the banks of a river would cause the banks to be eroded as dirt would be deposited at the bank of the river.

When this happens, flood water would lead to erosions on the water banks and also cause rocks to begin to breakdown.

If the erosion is a very high one, it would cause the particles to be deposited at the banks of the river leading to a change in the shape of the canal. Then the depths of the canals would get to be deeper.

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